6996687838 has 32 divisors (see below), whose sum is σ = 12104962560. Its totient is φ = 2971049760.

The previous prime is 6996687833. The next prime is 6996687839. The reversal of 6996687838 is 8387866996.

It is a super-2 number, since 2×6996687838² = 97907281404834228488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6996687833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 671295 + ... + 681637.

It is an arithmetic number, because the mean of its divisors is an integer number (378280080).

Almost surely, 2^6996687838 is an apocalyptic number.

6996687838 is a deficient number, since it is larger than the sum of its proper divisors (5108274722).

6996687838 is a wasteful number, since it uses less digits than its factorization.

6996687838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10792.

The product of its digits is 188116992, while the sum is 70.

The square root of 6996687838 is about 83646.2063574912. The cubic root of 6996687838 is about 1912.6294238414.

The spelling of 6996687838 in words is "six billion, nine hundred ninety-six million, six hundred eighty-seven thousand, eight hundred thirty-eight".